Hazard identified

Deterioration of the grommet seal in certain excessively used and/or improperly installed NTI boilers could potentially permit the escape of low levels of carbon monoxide.

As of April 30, 2018, the company has received 2 reports of grommet seal deterioration in Canada, and in one of those cases there was a report of a low level emission of carbon monoxide but no reports of injuries. In the United States, the company has received 1 report of Grommet seal deterioration, and no reports of injuries.